Sekai Maou

Three centuries ago, a demon lord tried to conquer the world but was stopped by a hero. Now, the demon lord has returned as a young girl with no memory of her past, but still possesses her former powers. She relies on a memory robot assistant for guidance. A new hero has also emerged, and the demon lord creates a fairy named Mao to find him by tracking the hero’s mark. Instead, Mao discovers Alsha, a timid and weak boy. Through Mao, the demon lord watches and supports Alsha as he attempts to become a hero, but she finds him to be largely ineffective.